Electric connection



F. F. DORSE'Y.

ELECTRIC CONNECTION.

APPLICATION FILED JUNE 12. 1918.

1,334,084. Patented Mar. 16, 1920.

II mm s UNITED sra'rns PATENT OFFICE.

FABNUHT F. DORSEY, OF ROCHESTER, NEW YORK, ASSIGNOR TO NORTH EASTELECTRIC COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

ELECTRIC CONNECTION.

To all whom it may concern:

Be it known that I, FARNUM F. Donsnr, a citizen of the United States,residing at Rochester, in the county of Monroe and State of New Yo haveinvented certain new and useful improvements in'Electric Connections;and-I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to Which it appertains to make and use the same.

tremity of the conductor 5.

This invention relates to anelectric connect-ion of the type in which aflexible con ductor or cable 15 removably attached to an electricterminal, in the form of a socket, by means of a plug-member secured tothe end of the flexible conductor.

The object of the invention isto produce an electric connection, of thetype in question, which shall be simple and inexpensive in construction,and more particularly one in which the pluganember may be made'entirelyof sheet-metal, in a single integral piece, of a form adapted to bereadily and securely attached to the conductor.

To the foregoing ends the invention resides particularly in the form ofthe plugmember hereinafter describech and in the manner in which thisplug-member is attached to the flexible conductor.

In the accompanying drawings Figure l is a side-elevation of aplug-and-socket connection embodying the present invention, with thesocket-member shown in section. Fig. 2 is a. side-elevation of theflexible conductor and the plug-member fronra point of view opposite tothat of Fig. 1; and Fig. 3 is an end-elevation of the plugmember.

The invention is illustrated as embodied in a plug-and-socket connectionsuitable for use with electric ignition-apparatus, i0ugh the inventionis obviously applicable to various other uses. The flexible conductor isin the form of a cable 5, provided with a sheath 6 of insulatingmaterial. The plugmember comprises a sheet-metal sleeve 7, which isclasped around the insulation 6 at some distance above the extremity ofthe conductor. From the sleeve 7 three integral arms depend. The arm 8is bent at a rightangle. at its lower end, to provide a part 9 which isperforated to receive the lower ex- This conductor secured to the part 9by separating the ends of its constituent wires and securing them inplace by means Specification of Letters Patent. I Patented BIay, 16,1920,

Application filed June 12, 1918. Serial No. 239,557.

der 10. I

- Theother two arms 11 are bent inwardly outwardly, as shown in Fig. 2,constitute spring-arms adapted to press outwardly against the walls ofthe socket-member and thus to insure a good electric connection, whileat the same time acting to retain the plug-member in the socket. Inorder that the connection may be more secure, the socket-member orterminal 14 is provided with an annular counter-bore 15 which is engagedby the projections 13, as shown in Fig. 1. By this arrangement the partsare securely held together, though they may be disengaged by a strongpull on the conductor. The socketan'ember 14 is shown as embedded in asleeve 16 of insulating material, but this is not an essential featureof the invention. I

A valuable feature of the invention resides in the fact that theprojections 13 are located near the extremity of the conductor, thuspermitting the conductive insert 14 in the socket-member to be madecomparatively short and inexpensive. It should also be noted that theresilience of the sleeve 7 is added to that of the arms 8 and 11,.owingto the fact that the sleeve is divided, so that the arms can be madecomparatively short of adrop of solwhile securing the necessary degreeof ela'sductor; and a plug-member adapted to cooperate with saidsocket-member, the plugnicmbcr consisting of an integral sheet-metalpiece comprising a divided sleeve clasped around the insulation of theconductor, and a plurality of arms extending, from the edge of thesleeve. in the direction of the extremity of the conductor, one of saidarms a being attached to the extremity of the conductor and one or moreof the arms springing outwardly for resilient engagement with thesocket-member. y

2. An electric connection comprising: a socket-member with an internalrecess; an insulated flexible conductor; and a plugmember adapted to'cooperate with said socket-member, the plug-member consisting .of anintegral sheet-metal piece comprising I a divided sleeve clasped aroundthe insulation of the conductor at a point remote from the extremitythereof, and a plurality of substantially parallel resilient armsextending, from the edgeof the sleeve, to the extremity of theinsulation, the extremity of one of the arms being bent inwardly, and

member.

attached to the extremity of the conduetor, and one of the arms beingprovided, near its free extremity, with an outward projection forengagement w-iththe recess in the socket- A plug-member comprising adivided sheet-metal sleeve, and a plurality of substantially parallelresilient arms extending FARNUM F. DORSEY.

